Mining-machine.



PATENTED APR. 16, 1907. E. G. TILLMAN. MINING MACHINE.-

APPLICATION rum JULY 17, 1906.

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PATBNTED APR. 16

5. G. TILLMAN. MINING MACHINE.

APPLICATION FILED JULY 17. 1906.

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E. G. TILLMAN. MINING MACHINE. APPLICATION FILED JULir 17. 190B.

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UNITED sTATEs PATENT oEEIoE.

EDWARD G. TILLMAN, OF THAYER, WEST VIRGINIA. MINING-MACHINE.

Specification of Letters Patent. 'ratented. April 16, 1907.

Application filed July l7 1906. Serial No. 826,626.

To all whmnit Wmty concern.-

Be it known that I, EDWARD G. TILLMAN, a citizen of the United States,residing at Thayer, in the county of Fayette and State of West Virginia,have invented. a new and useful Mining-Machine; and I do hereby declarethe following to be a full, clear, and eX act description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

This invention relates to that class of co alm ining machines which areadapted to be operated by hand in localities where power is notavailable and which comprise a plurality of bits or drills adapted tocut into the coal or mineral that is being operated upon.

The principal object of the present inven tion is to provide an improvedconstruction for facilitating the adjustment laterally or transversely,as well as vertically, of the. cutter-head carrying the operating-bits.Fur- I ther objects are to simplify and improve the general constructionand arrangement of the parts of the machine.

With these and other ends in view, which will readily appear as thenature of the inven- In the construction of the improved min- Iing-machine a substantiallyrectangular main frame A is provided, saidframe being of any suitable and desired dimensions and constructed in amassive manner, so as to be able to resist any strain to which it isliable to be subjected. In the preferred form illustrated in thedrawings said frame includes the corner members, forming legs oruprights l l, which are connected by front and rear cross-bars 2 3 andby longitudinal members or side bars 4 and 5 nearthe bottom and top,respectively. The side bars 5 5 at the top of the main frame areprovided with mortises 6 for the passage of vertical guide-bars 7,connected with and carrying a vertically-adjustable frame B, which issupported above the main frame A. The guide-b ars or carrying-bars 7 ateach side of the frame are connected by longitudinal bars 8, extendingbetween the front and rear posts or uprights 1 1 and having terminaltongues 9, guided in grooves 10 in said uprights. Adj usting-screws orthreaded shafts 11 are journaled in the longitudinal bars 4 5 at thesides of the frame, said screws or threaded shafts extending throughthreaded apertures 12 in the connecting-bars 8, said adjusting-screwsbeing provided with handwheels 13, whereby they may be c0nvenientlymanipulated to effect the vertical adjustment of the frame B and relatedparts, as will be readily understood. The bottom side bars have sockets14 to accommodate the lower extremities of the guide-bars 7 when theframe B is in a lowered position. v Sockets or recesses 15 for theaccommodation of the hand-wheels 13 are also formed in the bottom sidebars 4 of the frame A, thus insuring compactness and solidity of theparts. The vertically-adjustable frame B is composed of pairs of s acedside members 16 and 17, the latter of w liich, being the lower ones, areprovided with the downward-extending guide-bars 7 7, hereinbeforedescribed. The pairs of side bars 16 17 are framed together or connectedat their front ends by a plate 18 and at their rear ends by a plate orblock 19. The opposing faces of the side bars 16 17 are provided withgrooves 20 for the accommodation of longitudinally-sliding blocks 21,that and combination of parts, which will be hereinafter fullydescribed, and particularly pointed out in the claims.

In the accompanying drawings has been illustrated a simple and preferredform of the invention, it being, however, understood that no limitationis necessarily made to the precise structural details therein exhibited,but that changes, alterations, and modifications within the scope of theinvention may be resorted to when desired.

In the drawings, Figure l is a side elevation of a mining-machineconstructed in accordance with the principles of the invention. Fig. 2is a longitudinal vertical sectional view of the same. Fig. 3 is a topplan view showing in full and in broken lines, respectively, twodifferent adjustments of the bit-carrying head or cutterhead. Fig. 4 isa transverse sectional view taken on the plane indicated by the line 4 4in Fig.3. Fig. 5 is a transverse sectional view taken on the planeindicated by the line 5 5 in Fi 3. Fig. 6 is a serve to support thetransversely-adjustable transverse sectional view ta en on the planecutter-head, as will be presently more fully indicated by the line 6 6in Fig. 3. Fig. 7 is described.

The cutter-head C consists of a suitablyconstructed casing havinglaterally-extending arms 22, which are guided slidingly in the a frontelevation.

Corresponding parts in the several figures are denoted by likecharacters of reference.

blocks 21. The latter are also provided with bearings for the terminalends of a threaded shaft 23,1which extends through a corrcs pondingly-tl'lreaded perforation 24 in the casing of the cutter-head,which latter may thus be transversely adjusted in the frame by simplymanipulating the threaded shaft or adjusting-screw 23, the latter beingprovided with a crank or handle 25, whereby it may be con venientlymanipulated.

The plate v18 at the front end of the frame B supports atransversely-slid able stirrupplate 26, and the plate 1.9 at the rearend of the frame B has a slot 27, wherein is guided atransversely-slidable block 28, said block being capable of beingretained in position at various adjustments, as by means of a setscrew29.

A main operating-shaft 30 extends longitudinally through the casing ofthe cutter head, said shaft being preferably of non-circularcross-section through the greater ortion of its length in order that itmay slide t 'lrough a driving-wheel, such as a spur-gear 31, fittedthereupon for rotation therewith within the casing of the cutter-head.The ends of the operating-shaft 30 are journaled in the stirrupplate 26and in the block 28, and the rear end of said shaft has a crank 32,whereby it may be manipulated. An additional shaft 33 of non-circularcontour in cross-section is j ournaled at its front end in thestirrup-plate 26 and extends rearward through the casing of thecutter-head, where it is provided with a sliding pinion 34, meshing withthe spur-gear 31, whereby the shaft 33 will thus be driven, said shaftcarrying at its front end a fly-wheel 35. The main operating-shaft S0,in addition to the spur-gear 31, carries a drivingpinion 36, serving totransmit motion through gearing 37 to one of a plurality of shafts 38,journaled in the upper portion of the casing of the cutter-head andprovided with intermeshing pinions 39, whereby they will be '0 eratedsimultaneously or in series, as will e readily understood. The frontends of the shafts 38 have sockets 40 for the reception of the bits,which latter are guided through apertures 41 in the stirrup-plate at thefront end of the machine.

Suitably secured in the stirrup-plate 26 and extendin rearward throughthe casing of the cutteread is a feed-screw 42, upon which within thecasing of the cutter-head there is mounted a nut 43, having peripheralteeth 44 meshing with the driving-pinion 36. It will thus be seen thatwhen the shaft 30, carrying the pinion 36, is rotated the cutterheadcasing will be fed in a forward or a rear ward direction, according tothe direction of rotation, and that at the same time the bitcarryingshafts will be effectively rotated. At the same time motion will betransmitted to the fly-wheel-carrying shaft, whereby the operation ofthe machine will be steadied and 6 5 otherwise facilitated and improved.

From the foregoing description, taken in commotion with the drawingshereto annexed, the operation and advantages of this invention will bereadily understood by those skilled in the art to which it appertains.The general construction is simple, compact, and inexpensive, and itprovides simple mechanical means for boringin coal in localities wherepower is not available. By simply manipulating the'screws 11 the frameB, in which the cutter-head moves, may be vertically adjusted, andtransverse adjustment of the cutter-head in said frame may be effectedby manipulation of the feed-screw 23, thus enabling the bits or cuttersto be readily adjusted to any desired position for o' eration. Byrotating the main operatingshaft the bit-carrying shafts are rotated,and the cutter-head is at the same time fed forward or rearward, as maybe desired, according to the direction of rotation.

For the purpose of securing the machine in position during operationbrace-screws of ordinary construction are to be employed, and recessesor sockets 4:5 for the rece tion of the points of such screws have beens own in the fra1nebeams 16 and in the stirrupplate 26.

Having thus described my invention, I claim and desire to secure byLetters Patent of the United States .1. In a mining-macl'iine, a mainframe comprising corner-posts provided with vertical grooves and upperand lower side mem bers, the upper side members being provided withvertical mortises; a vertically-adjustable frame having bars guidedthrough the mortises and bars connecting the guidingbars and havingthreaded perforations and terminal tongues guided in the grooves in thecorner-posts; adjusting screws extending through the threadedperforations in the connecting-bars and journaled in the upper and lowerside members of the main frame; and a cutter-carrying headlongitudinally and transversely movable in the verticallyadjustableframe.

2. In a mining-machine, a main frame,

comprising upper and lower side members.

the former being provided with mortises, and the latter being providedwith recesses and corner-posts being provided with grooves; a

vertically-adjustableframe comprising guidebars and bars connecting theguide-bars and provided with threaded perforations and terminal tongues,the guidebars operating through the mortises in the main frame andhaving their terminals adapted to enter the recesses in the lower sidebars of the main frame and the terminal tongues being adapted to move inthe grooves in the corher-posts; and adjusting-screws extending throughthe perforations in the connectingbars, journaled in the upper and lowerside members andhaving hand-wheels arranged in the recesses in the lowerside members.

3. In a mining-machine, a vertically-adjustable frame,formed with spacedside members and a slot at its rear end, a strirup-plate transverselymovable upon the front end of said frame, a block transversely movablein the slot in the rear end of said frame, blocks supported forlongitudinal movement betweenthespaced sidemembers, acutter-carryinghead supported for transverse movement in the longitud inally-movableblocks, bit-carrying shafts supported for rotation in thecutter-carrying head, an operating-shaft extending through the latterand journaled in the stirrup-plate and in the transverselymovable blockof the vertically-adjustable frame, driving means slidably connectedwith the operating-shaft, means for transmitting motion from the latterto the bitcarrying shafts, a feed-screw connected with the stirrup-plateand extending through the cutter-carrying head, and a nut upon saidfeed-screw having peripheral teeth meshin with the driving means uponthe operatingshaft.

4. In a mi11ingmachine, a vertically-adjustable frame having spaced sidemembers, blocks supported for longitudinal movement between said sidemembers, a cutter-head supported for transverse movement in thelongitudinally-movable blocks, bitcarrying shafts supported for rotationin the cutterhead, a fiy-wheehcarrying shaft extending through thelatter, a suitably-supported feedscrew extending through thecutter-head, a

nut located Within the cutter-head upon the feedscrew, asuitably-supported operatingshaft extending through the cutter-head, andmeans for transmitting motion from said shaft to the bit-carryingshafts, to the flywheel-carrying shaft, and to the nut upon thefeed-screw.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

EDWARD G. 'IILLM AN Witnesses:

H. L. GOODMAN, B. J. ANTHONY.

